Flush-tank valve.



A. F. HUMPHREY & H. C. NHCHAELS.

FLUSH TANK VALVE. APPLICATION FILED AER. 5. IaII.

1,272,957. Y atented July 16, 1918.

@Il lng I InfIIIIIIIiIIIIII "5 UNF-FED STATES PATENT FFTCE.

ALEXANDER HUMPHREY AND RAYMOND C. MICHAELS, OF PITTSBURGH, PENNSYL- i VANA, ASSIGNORS F ONE-FIFTH TO WILLIAM L. SWARTZ, OF PITTSBURGH, PENN- SYLVANLA.

FLUSH-TANK VALVE.

Specification of Letters Patent.

Patented July 16, 1918.

To all whom it may concern.

Be it known that we, ALEXANDER F. HUMPHREY and RAYMOND C. MIcHAnLs, citizens of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Flush-Tank Valves, ofwhich the following is a speciication.

This invention relates to certain new and useful improvements in flush tank4 valves.

The primary object of the invention is the provision of a valve for flush tanks, the same being adapted for automatic operation during the rise and fall of the water, means being arranged for equalizing the water pressure upon the valve whereby the latter is easily opened and closed rand the so-called water hammer7 is eliminated.

A further object of the device is to provide a iioat controlled valve adapted for positioning in the corner or at any other point within a tan-k, the structure being formed of few parts readily separable and not liable to vget out of order while the valve is easily actuated upon a change in the level of the water within the tank.

lVith these general objects in view and othersthat will appear as the nature of the inventionis better understood, the same consists in the novel combination and arrangeplication and in which like designating' ment of parts hereinafter fully described, illustratedV in the accompanying drawings and then claimed.

In the drawing forming a part of this apcharacters refer to corresponding parts throughout the several views,

Figure 1 isa side elevation of the( device.

Fig. 2 is a top plan view thereof.

Fig. 3 is a vertical sectional view taken upon line IIL-III of Fig. 2.

Fig. 4 is a vertical central longitudinal sectional view of the device.

Fig. 5 is a central vertical sectional View of a slightly modified form of the invention operatively mounted upon the floor of a tank, and,

Fig. 6 is a top plan View thereof.

Referring more in detail to the drawing, it will be understood that the device being designed for controlling the in-flow of water to a tank, the device is positioned therein, the form illustrated in Fig. 1 being serviceable when it is found desirable to position the valve in compact arrangement within one corner portion of the tank while the structure shown in Fig. 5 is identical in its operation as well as its essential elements of construction being readily positioned at any desired point within the tank.

Referring more in detail to the form of invention illustrated in Fig. 1, the same consists of a tubular casing 10 having an axial bore 11 extending therethrough, a bottom extension 12 being carried by the casing for attachment in an upright position to the bottom of the tank, not shown. The lower portion 13 of the bore 11 constitutes the water inlet for the casing while the upper portion 14 thereof is of av slightly enlarged diameter and forms a chamber within which a cylindrical valve 15 is adapted for longitudinal reciprocation.

The lower end of the chamber la is enlarged as at 16 while the valve seat 17 is removably threaded into the bottom thereof having an opening 18 therethrough communicating with the inlet bore 13, a plurality `of outlet ports 19 being provided downwardly inclined leading'from the enlarged chamber 16 while a suitable outlet spout 2O also leads from the said enlarged chamber. A packing or washer 21 is preferably secured to the lower end of the valve 15 by means of a screw 22 for engaging the valve seat 17 Awhile a packing 23 is secured upon the upper end of the valve for giving the valve a tight iitting connection within the chamber 141,y it being noted that the valve 15 has an upward reduced cylindrical stem 24 for receiving the washer 25 overlying the packing 23 as well as a suitable lock nut 26. A cap 27 is threaded upon the upper end of the casing 10 for limiting the upward l movement of the valve, the central socket 28 Vside of the casing 10 and having a foot 36 at its inner end freely arranged within the side notch 37 of the valve 15, it being understood that a ioat, not shown, of any desired construction is attached to the oppositel free end of the arm 32. The usual-,form of reiill pipe or siphon tube 38 is carried in an upright position by a boss 39 of the casing 10 communicating with the chamber 16 by a port .40.

The operation of the device will be appar? ent as the float arm 32 will be maintained by the float in the position illustrated in Figs. 1 and Li of the ydrawing under normal n conditions with the packingv 21 of thel valve outlet for the water is through the spout 2O although the ports 19 allow some of the water to pass therethrough, increasing the outflow, decreasing the outward pressure `of the water and lessening the Aamount of noise incident thereto. A small quantity .of water passes from the chamber 16 through the pipe 38 for refilling the bowl after the flushing operation and forming the water seal as usually provided in such structures.

Theform of the invention shown in Figs. 5 and 6 of the drawing embodies all ofthe same elements heretofore described and it is believed unnecessary to repeat such description, it being noted that the only dierence is in closing the bottom of the valve casing 10/ and forming a branching connection with the valve chamber l14 above the valve 15 and the inlet 13 below the valve seat 17, the same providing a relatively small passage 30 leading to a point above thevalve and an enlarged passage 41 below the Isame each communicating with the lrearwardly extending inlet endv12 Vof the casing 10. A

water conduit or supply pipe 42 is iXed through the bottom 43 of the iiushing tank with the valve attached thereteby means of the rear end :12" thereof. It-.w-ill be seen that the operation of this form of thedevice is identical with that heretofore described, a float arm 32 being arranged having a forked inner end 36 freely engagingA inf-.the side notches 37 of the said valve 15.

A valve is arranged that is easy and inexpensive t0 mannfaetnre having ,readily changeable parts and being easily and noiselessly'operililed Within a flush-ing tank by the float mechanism thereof. Whatvve'eleirn es new ie r- 1 A .device of the .Claes described .Cninpri- Se inge, Casing having .an axial Chamber thereiny provided with an enlarged Vlower portion having a plurality of relatively'small, side outlet porte, avalve Seat-arranged atvthe bottom of said enlarged portion, outlet-.spout for said enlarged portion, and ka float controlled reciprocating valve within said chainber-having one endadapted for engagement `with said seat when the valve is closed, said casing having a water inlet opening communicating with said chamber at points above and below Said valve.

2. A device of the .Classdescrbed @emprising e .Casing having an .axial ,chamber therein provided with an enlarged lower portion having a plurality oirelatively small side Outlet perte, e valve seat arranged et the bottoni 0f ,said enlarged pnrtixni,l en Outlet Spent for Said enlarged portion, a Heat .eentrolled reeipreeeting'valve Within said ber having'one end adapted for engagement with said Seat when vthe valve is. ,Closed .and provided with a ,rednedguide stem on the other end thereef having n Packing vsecured thereon., and n guide and stop` cap for said stem secured to the upper end of the casing, Said casing having a Water inlet vOpening communicatingv with said chamber atpoints above and belevv said-valve- Y .In .testimony whereof Weefijx our Signatures. Y

ALEXANDER F.-

RAYMOND C. MlCHAELS Copie# .0 .1 thllpetm ,may be obtained for @recents eeen, byshlreseinsthe Genzaialpnsrnf heen- Wjgslgngton, D; C. 

